Calculation
Epoch Converter
See the current Unix epoch as it ticks, convert a timestamp in seconds, milliseconds, microseconds, or nanoseconds into GMT and your time zone, turn a calendar date into an epoch timestamp, or convert a batch of timestamps one per line.
Time
Live epoch clock
The current Unix time updates every second, with the matching GMT and local time.
Both directions
Timestamp to human date, and year, month, day, hour, minute, and second back to a timestamp.
Batch convert
Paste one timestamp per line and read the epoch, local time, and relative time together.